When are SPECI reports issued?

SPECI reports are issued when there are significant changes to the weather conditions that occur between the regular scheduled METAR report times. These changes may include variations in parameters such as visibility, wind, temperature, and other critical elements that can affect flight operations. The primary purpose of SPECI reports is to provide timely updates to pilots and air traffic control, ensuring that they have the most current and relevant information for safe flight management.

This is particularly important in dynamic weather situations where conditions can change rapidly, and a scheduled METAR report may not reflect the latest conditions. By issuing a SPECI report, meteorological authorities help maintain safety and efficiency in aviation operations.